EP0027160A2 - Prothèse de l'articulation de la hanche - Google Patents

Prothèse de l'articulation de la hanche Download PDF

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Publication number
EP0027160A2
EP0027160A2 EP80104099A EP80104099A EP0027160A2 EP 0027160 A2 EP0027160 A2 EP 0027160A2 EP 80104099 A EP80104099 A EP 80104099A EP 80104099 A EP80104099 A EP 80104099A EP 0027160 A2 EP0027160 A2 EP 0027160A2
Authority
EP
European Patent Office
Prior art keywords
prosthesis
shaft
collar
neck
prosthesis neck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80104099A
Other languages
German (de)
English (en)
Other versions
EP0027160A3 (en
EP0027160B1 (fr
Inventor
Peter Gino Niederer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Protek AG
Sulzer AG
Original Assignee
Protek AG
Sulzer AG
Gebrueder Sulzer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Protek AG, Sulzer AG, Gebrueder Sulzer AG filed Critical Protek AG
Priority to AT80104099T priority Critical patent/ATE9544T1/de
Publication of EP0027160A2 publication Critical patent/EP0027160A2/fr
Publication of EP0027160A3 publication Critical patent/EP0027160A3/de
Application granted granted Critical
Publication of EP0027160B1 publication Critical patent/EP0027160B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses

Definitions

  • the invention relates to a hip joint prosthesis with a straight, leaf-like shaft for anchoring by wedging and via a cement bed in the femur, the shaft initially expanding conically from the distal free end symmetrically to a longitudinal central axis of the leaf, the cone surface of the lateral narrow side also opening up About 3/4 of the shaft height merges into an inclined surface inclined to the longitudinal central axis, while the narrow medial side emerges from the cone in a continuously curved curve into the prosthesis neck and finally a collar-like attachment separates the leaf sides from the prosthesis neck.
  • Hip joint prostheses of a similar type are known, for example, from the magazine "Ortho internationale” 8 (1979), page 73/74, in particular Figure 1.
  • the so-called straight stem of this prosthesis has the task of clamping itself in the cavity of the medullary cavity, which is operatively matched to its dimensions, and a bed of bone cement filled into it so that the cement bed or the cement holder is largely relieved of load-bearing functions; This prosthesis is primarily supported by jamming along the medial and lateral narrow sides of the shaft.
  • the shoulder that separates the prosthesis neck from the stem of the prosthesis runs such that it lies essentially perpendicular to the axis of the prosthesis neck.
  • the paragraph is then essentially parallel to Cut through the neck of the femur, so that the collar is additionally supported on the edge of the cement quiver surrounding the bone to prevent the shaft from sinking into the bone cement.
  • there is a torque effect in hip joint prostheses due to the load acting on the joint head as a result of the prosthesis neck acting as a "lever", by means of which the relatively thin sheet of the prosthesis construction under discussion is subjected to relatively high stresses on bending and torsion.
  • the femur in the area of the femoral neck and the joint head is generally deformed and crippled, and the medullary cavity is often extremely narrow.
  • Prostheses of the construction mentioned at the outset for these diseases are therefore relatively thin and have a relatively narrow blade. Due to the described torque, overly elastic plastic deformations can occur in the relatively thin and narrow sheet of these prostheses.
  • Object of the invention is to overcome these difficulties and a plastic deformation of the prosthetic blade and its rotation in the cement and bone bed due to the - to prevent torque effect. According to the invention, this object is achieved in that the collar-like extension extends at least approximately in the direction of the femoral neck.
  • the new design of the prosthesis socket is reinforced accordingly, so that plastic deformation no longer has to be feared even with the thin and narrow stems for dysplasia patents.
  • the arrangement of the prosthesis neck according to the invention allows it to be supported directly in the bone in the area of the medial calcar arch in the sense of a further reduction in the torque effect mentioned due to the load.
  • the collar of conventional prostheses allows a good support of the prosthesis described in the cement.
  • the desired effect of the new construction can be improved if the collar-like approach is at least approximately flush with the lower edge of the denture neck.
  • the prosthesis neck is thus functionally understood as part of the prosthesis socket, because - in contrast to the usual prostheses - it takes on a portion of the support in the bone and cement stores.
  • the leaf-like shaft 2 widens conically symmetrically to a longitudinal central axis 3; At about 3/4 of the shaft height, the lateral narrow side 4 of the shaft 2 has a discontinuity at which the cone widening from the distal end merges into an inclined surface running towards the longitudinal central axis 3. This ends in an at least almost horizontal shoulder 5 which forms the transition to the prosthesis neck 6; on the free end of the joint head 11, on which the direction of the main load of the prosthesis is indicated by the arrow 9 in FIG. 1.
  • the widening cone of the medial narrow side 13 of the B shaft blade 7 merges into a circular arc /, which connects the cone steplessly to the lower edge 8 of the prosthesis neck 6.
  • the relatively thin and narrow shaft blades 7 end at the top in a collar-like extension 12 which, according to the invention, runs approximately in the direction parallel to the femoral neck axis and forms the transition to the thicker femoral neck.
  • the height of the collar 12 is chosen so that it is an extension of the lower edge 8 of the prosthesis neck.
  • the collar 12 and the extended prosthesis neck 6 extending from it to the shoulder 5 are practically completely or at least largely sunk into the cement bed, which is dashed in FIG. 1 by the - which represents the upper boundary of the cement bed Line 10 is indicated. Regardless of where you have to assume the fulcrum for the torque occurring on the collar 12 due to the eccentric load, in addition to the reduced risk of plastic deformation, this results in better anchoring of the shaft in the cement and bone bearing.
  • the leaf sides 7, in which longitudinal grooves 16 are provided are closed off by a circular arc running from the lateral narrow side 4 to the medial narrow side 13, while the two leaf sides 7 terminate with a relatively large radius in a tip (FIG. 2).
  • the curvature of this runout is chosen so that the stressful flow of force from the shaft 2 to the cement quiver surrounding it and, further, to the cancellous bone tissue, which may be compressed when hammered in, may be continuously transferred.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Powder Metallurgy (AREA)
EP80104099A 1979-10-11 1980-07-15 Prothèse de l'articulation de la hanche Expired EP0027160B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104099T ATE9544T1 (de) 1979-10-11 1980-07-15 Hueftgelenkprothese.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH921679A CH640406A5 (de) 1979-10-11 1979-10-11 Hueftgelenkprothese.
CH9216/79 1979-10-11

Publications (3)

Publication Number Publication Date
EP0027160A2 true EP0027160A2 (fr) 1981-04-22
EP0027160A3 EP0027160A3 (en) 1981-10-28
EP0027160B1 EP0027160B1 (fr) 1984-09-26

Family

ID=4349604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104099A Expired EP0027160B1 (fr) 1979-10-11 1980-07-15 Prothèse de l'articulation de la hanche

Country Status (7)

Country Link
US (1) US4359785A (fr)
EP (1) EP0027160B1 (fr)
AT (1) ATE9544T1 (fr)
CH (1) CH640406A5 (fr)
DE (1) DE3069288D1 (fr)
ES (1) ES258158Y (fr)
IE (1) IE50431B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032165B1 (fr) * 1980-01-14 1983-12-28 GebràœDer Sulzer Aktiengesellschaft Tige en forme de lame pour l'ancrage d'une prothèse de l'articulation de la hanche
EP0135755A1 (fr) * 1983-08-29 1985-04-03 Protek AG Tige pour une prothèse de l'articulation de la hanche
EP0145938A3 (en) * 1983-11-30 1985-07-24 Protek Ag Blade-shaped intramedullary prosthesis
US4657552A (en) * 1984-04-02 1987-04-14 Emil Schenker Ag Prosthesis of the hip
FR2676359A1 (fr) * 1991-05-16 1992-11-20 Syroco Tige femorale de prothese de hanche.

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH669106A5 (de) * 1986-04-03 1989-02-28 Sulzer Ag Blattartiger schaft fuer die verankerung einer hueftgelenksprothese im femur.
USD339634S (en) 1987-08-24 1993-09-21 Zimmer, Inc. Proximal portion of a femoral hip stem prothesis
GB9201734D0 (en) * 1992-01-28 1992-03-11 Howmedica Femoral component for use in a replacement hip prosthesis
DE4428099C5 (de) * 1994-08-09 2004-12-30 Moos, Norbert, Dr. Mit Knochenzement befestigbare Hüftkopf-Schaft-Endoprothese
DE29705500U1 (de) * 1997-03-26 1998-07-23 Waldemar Link GmbH & Co, 22339 Hamburg Hüftgelenkendoprothese
WO2000059410A2 (fr) * 1999-04-07 2000-10-12 Plus Endoprothetik Ag Tige plate d'une prothese de rotule destinee a etre inseree dans le femur
DE19928791A1 (de) * 1999-04-13 2000-11-02 Plus Endoprothetik Ag Rotkreuz Blattartiger Schaft einer Hüftgelenkprothese für die Verankerung im Femur
US7494510B2 (en) * 2000-04-13 2009-02-24 Smith And Nephew Orthopaedics Ag Leaflike shaft of a hip-joint prosthesis for anchoring in the femur
US6595998B2 (en) 2001-03-08 2003-07-22 Spinewave, Inc. Tissue distraction device
GB0207170D0 (en) 2002-03-26 2002-05-08 Mcminn Derek J W Hip joint prosthesis
EP1438932A1 (fr) * 2003-01-17 2004-07-21 WALDEMAR LINK GmbH & Co. KG Prothèse de la hanche avec tige pour l'implantation dans le fémur
DE102005048873A1 (de) * 2005-09-20 2007-03-29 Plus Orthopedics Ag Blattartiger Schaft für Hüftgelenkprothese
US20080200990A1 (en) * 2007-02-16 2008-08-21 Mctighe Timothy Tissue sparing implant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740769A (en) * 1971-02-11 1973-06-26 E Haboush Prosthesis for hip joints
GB1409051A (en) * 1971-09-24 1975-10-08 Nat Research Department Corp Hip joint prostheses
GB1409054A (en) * 1971-09-24 1975-10-08 Nat Res Dev Hip joint prosthesis
IE41443B1 (en) * 1974-08-29 1980-01-02 Charnley Surgical Inventions Fermoral prosthesis
SU545343A1 (ru) * 1974-10-31 1977-02-05 Саратовский Государственный Научно-Исследовательский Институт Травматологии И Ортопедии Способ получени модели эндопротеза кости

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032165B1 (fr) * 1980-01-14 1983-12-28 GebràœDer Sulzer Aktiengesellschaft Tige en forme de lame pour l'ancrage d'une prothèse de l'articulation de la hanche
EP0135755A1 (fr) * 1983-08-29 1985-04-03 Protek AG Tige pour une prothèse de l'articulation de la hanche
US4728334A (en) * 1983-08-29 1988-03-01 Protek Ag Shaft for hip joint prosthesis
EP0145938A3 (en) * 1983-11-30 1985-07-24 Protek Ag Blade-shaped intramedullary prosthesis
US4657552A (en) * 1984-04-02 1987-04-14 Emil Schenker Ag Prosthesis of the hip
FR2676359A1 (fr) * 1991-05-16 1992-11-20 Syroco Tige femorale de prothese de hanche.

Also Published As

Publication number Publication date
DE3069288D1 (en) 1984-10-31
IE50431B1 (en) 1986-04-16
ES258158Y (es) 1982-05-16
IE802117L (en) 1981-04-11
ATE9544T1 (de) 1984-10-15
EP0027160A3 (en) 1981-10-28
US4359785A (en) 1982-11-23
EP0027160B1 (fr) 1984-09-26
CH640406A5 (de) 1984-01-13
ES258158U (es) 1981-12-01

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